slapos_jio_api_style: Add related key to be able to search instance from host compute node reference

* NotFound Errors are now handled by API

Can replace the following SlapTool calls:
* softwareReleaseError
* availableSoftwareRelease
* buildingSoftwareRelease
* destroyedSoftwareRelease

Do not acquire from Person to an Organisation, as most user do not have access to the organisation_module

- directly show the software_release and sofware_type informations
- instance title is meaningless on this view, as admin want to get an understanding of which kind of software are instanciated
- drop creation_date, image columns

See merge request nexedi/slapos.core!727

copy netrc file to software home location with the good ownership.